Good speakers to be placed close to rear wall

Audio phsycic Classic series range from about $3,500 to maybe around 7K. Very nice controlled speakers. I heard the Classic 20 and 30. The 30 I liked much more being the more expensive set but to be honest the room was set up more for them. Can be played at high/low levels and still maintain the tonal qualities that make them great.No ports so you do not have to worry about rear or side walls for air movement. The article that I read after hearing them stated that to achieve the fullest bass response they had to position them closer to the wall. I am seriously thinking about these. see link

http://www.audiophysic.de/download/classic30/stereo0913_classic30en.pdf